如图,在
中,
为
上一点,且
为
边上的一个动点,连接
,以
为边向右侧作等边
,连接
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffc20298abb008a862895f49017b889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668668115fca6191beccc3700123f48f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
更新时间:2024-04-17 14:16:04
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【推荐1】如图,在
中,
与点E,点M是线段
上一点(不与点B,E重合),点N在直线
上,若
,且
,则:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32217457c4e96e2ef155cf15c1b65d97.png)
___________ .
(2)
长的取值范围是___________ .
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32217457c4e96e2ef155cf15c1b65d97.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/14/2d01213b-5b8e-4e6f-88ea-709680327f45.jpg?resizew=156)
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【推荐2】如图,正方形ABCD的边长为2,点E是射线AC上一动点(不与A,C重合),点F在正方形ABCD的外角平分线CM上,且CF=AE,连接BE, EF, BF下列说法:
①的值不随点E的运动而改变
②当B,E, F三点共线时,∠CBE=22.5°;
③当△BEF是直角三角形时,∠CBE=67.5°;
④点E在线段AC上运动时,点C到直线EF的距离的最大值为1;
其中正确的是__________ (填序号).
①的值不随点E的运动而改变
②当B,E, F三点共线时,∠CBE=22.5°;
③当△BEF是直角三角形时,∠CBE=67.5°;
④点E在线段AC上运动时,点C到直线EF的距离的最大值为1;
其中正确的是
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解题方法
【推荐1】已知正△ABC的边长为1,点P,点Q同时从点A出发,点P以每秒1个单位速度沿边AB向点B运动,点Q以每秒4个单位速度沿折线A﹣C﹣B﹣A运动,当点Q停止运动时,点P也同时停止运动.在整个运动过程中,若以点A,B,C中的两点和点Q为顶点构成的三角形与△PAC全等,运动时间为t秒,则t的值为__ .
![](https://img.xkw.com/dksih/QBM/2021/6/10/2739997239508992/2740069795831808/STEM/3a54fb3837e54e44a075dc5ab90f8fb7.png?resizew=137)
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【推荐2】
是边长为5的等边三角形,
是边长为3的等边三角形,直线BD与直线AE交于点F.如图,将
绕点C旋转1周,在这个旋转过程中,线段AF长度的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a0acc93490a6a784eb62201d93dd93d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/e4151ed2-2219-42c2-85e5-006bfca8ac97.png?resizew=156)
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【推荐1】如图,在等腰直角三角形
中,
,
,
,点E是
的中点,点P是
上一动点,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41f3a30d63fde5623d018b4a77231967.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/10/42ae65f6-a8aa-42a0-aea1-e117a1343692.png?resizew=114)
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【推荐2】如图,在正方形
中,
,点E是
边上一点,且
,连接
,点F是
边上一点,过点F作
交
于点G,连接
,
,
,则四边形
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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